Node Jimp | scale

Introduction
The scale() function is an inbuilt function in Nodejs | Jimp which uniformly scales the image by a factor.

Syntax:

scale(scale, mode, cb)

Parameter:

  • scale – This parameter stores the scaling factor of the image.
  • mode – This is optional parameter which stores the scaling method.
  • cb – This is optional parameter which is invoked when compilation is complete.

Input Images:



Example 1:

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// npm install --save jimp
// import jimp library to the environment
var Jimp = require('jimp');
  
// User-Defined Function to read the images
async function main() {
  const image = await Jimp.read('
   https://media.geeksforgeeks.org/wp-content/uploads/20190328185307/gfg28.png');
// scale Function having scaling factor as 0.2
  image.scale(.2)
  .write('scale1.png');
}
  
main();
  console.log('Image Processing Completed');

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Output:




Example 2: With mode and cb (optional parameters)













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// npm install --save jimp 


// import jimp library to the environment 


var Jimp = require('jimp'); 


  


// User-Defined Function to read the images 


async function main() { 


  const image = await Jimp.read(' 


   https://media.geeksforgeeks.org/wp-content/uploads/20190328185333/gfg111.png'); 


// scale Function having scaling-factor, mode and callback function 


  image.scale(3, Jimp.RESIZE_BEZIER, function(err){ 


    if (err) throw err; 


  }) 


  .write('scale2.png'); 


} 


  


main(); 


  console.log('Image Processing Completed'); 



















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Output:




Reference: https://www.npmjs.com/package/jimp





    

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